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How to get object length [duplicate]
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David TangDavid Tang
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Determine Whether Integer Is Between Two Other Integers?
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Paolo MorettiPaolo Moretti
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lodash multi-column sortBy descending
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341
As of lodash 3.5.0 you can use sortByOrder (renamed orderBy in v4.3.0):
var data = _.sortByOrd...
What is “vectorization”?
...ead of processing a single element of an array N times, it processes (say) 4 elements of the array simultaneously N/4 times.
(I chose 4 because it's what modern hardware is most likely to directly support; the term "vectorization" is also used to describe a higher level software transformation wher...
How can I match a string with a regex in Bash?
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To match regexes you need to use the =~ operator.
Try this:
[[ sed-4.2.2.tar.bz2 =~ tar.bz2$ ]] && echo matched
Alternatively, you can use wildcards (instead of regexes) with the == operator:
[[ sed-4.2.2.tar.bz2 == *tar.bz2 ]] && echo matched
If portability is not a con...
Ways to save enums in database
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164
We never store enumerations as numerical ordinal values anymore; it makes debugging and support ...
Send string to stdin
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jm666jm666
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Pythonic way to combine FOR loop and IF statement
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340
You can use generator expressions like this:
gen = (x for x in xyz if x not in a)
for x in ge...
How to check if a specified key exists in a given S3 bucket using Java
...he details of the object (not the contents) of the object. It will throw a 404 if the object is missing. So you can catch that exception and deal with it in your app.
But in order for this to work, you will need to have ListBucket access for the user on that bucket. Just GetObject access will not ...
Why use a prime number in hashCode?
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Because you want the number you are multiplying by and the number of buckets you are inserting i...